JP2562108B2 - Blow core insertion device for injection blow molding machine - Google Patents
Blow core insertion device for injection blow molding machineInfo
- Publication number
- JP2562108B2 JP2562108B2 JP12313393A JP12313393A JP2562108B2 JP 2562108 B2 JP2562108 B2 JP 2562108B2 JP 12313393 A JP12313393 A JP 12313393A JP 12313393 A JP12313393 A JP 12313393A JP 2562108 B2 JP2562108 B2 JP 2562108B2
- Authority
- JP
- Japan
- Prior art keywords
- seat body
- blow
- mold
- guide member
- stopper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は射出成形したプリフォ
ームをそのまま移送してびんなどの成形品に吹込成形す
る成形機の吹込コア挿入装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blow core insertion device of a molding machine for directly transferring an injection-molded preform to blow-mold a molded product such as a bottle.
【０００２】[0002]
【従来の技術】プリフォームの射出成形から、びんなど
の成形品の吹込成形を連続して行う成形機は、特公昭５
３−２２０９６号公報により既に公知となっている。こ
の公知の成形機が具備する吹込コア挿入装置は、上部基
盤に下向きに設けたメインシリンダのプランジャに棚板
を有する座体を連結し、その座体の下端に吹込コアを取
付けるとともに、吹込コア上方の棚板にサブシリンダを
載置固定し、そのサブシリンダのプランジャに先端部を
上は吹込コアに挿通した延伸ロッドを連結した構造から
なる。2. Description of the Related Art A molding machine for continuously performing injection molding of preforms and blow molding of molded articles such as bottles is disclosed in Japanese Patent Publication No.
It has already been known from the gazette of 3-22096. The blow core insertion device provided in this known molding machine is such that a seat body having a shelf plate is connected to a plunger of a main cylinder provided downward on an upper base, and the blow core is attached to the lower end of the seat body. The sub-cylinder is mounted and fixed on the upper shelf plate, and the plunger of the sub-cylinder has a structure in which a distal end of the sub-cylinder is connected to an extension rod inserted through a blow core.
【０００３】このような吹込コア挿入装置では、空気圧
によるメインシリンダの作動により、吹込コアの降下挿
入とメインシリンダの下方移動とがなされ、降下後のサ
ブシリンダの作動により延伸ロッドを伸長してプリフォ
ームを延伸できるようにしてある。In such a blow core insertion device, the blow core is lowered and inserted by the operation of the main cylinder by air pressure, and the main cylinder is moved downward, and the extension rod is extended by the operation of the sub cylinder after the fall. The reform can be stretched.
【０００４】[0004]
【発明が解決しようとする課題】この公知の吹込コア挿
入装置では、延伸ロッドの伸長と同時あるいは僅かに遅
れて吹込コアからプリフォーム内に空気が吹込まれるの
であるが、この空気圧により吹込コアが押し上げられ
て、プリフォーム口部との嵌合から空気が漏れないよう
に、吹込成形が完了するまで座体をメインシリンダの空
気圧により押さえている。In this known blow core insertion device, air is blown into the preform from the blow core at the same time as or slightly after the extension of the stretching rod, but this air pressure blows the blow core. The seat body is held by the air pressure of the main cylinder until the blow molding is completed so that the air is not pushed up and the air does not leak from the fitting with the preform mouth.
【０００５】この空気圧による座体の押さえには限界が
あり、予め設定された範囲では吹込圧力に負けて座体が
浮き上がるようなことはないが、成形品の取り数を増す
ために、キャビティ数を増やしたり、細口びん用の吹込
金型を広口びん用の吹込金型に変更した場合などでは、
そこに使用される吹込空気圧の総量が、メインシリンダ
に付与される空気圧を大幅に上回り、また吹込コアの受
圧面積の増大などから、吹込空気圧による座体の浮き上
がりを阻止することが難しく、成形機としてはある程度
の仕様変更は可能であっても、応用性に欠けるという課
題があった。There is a limit to how much the seat body can be pressed by the air pressure, and the seat body will not be lifted up due to the blowing pressure within a preset range. However, in order to increase the number of molded products, the number of cavities is increased. Or when changing the blowing mold for narrow mouth bottles to the blowing mold for wide mouth bottles,
Since the total amount of blown air pressure used there is significantly higher than the air pressure given to the main cylinder, and the pressure receiving area of the blown core is increased, it is difficult to prevent the seat body from rising due to blown air pressure. As a result, there was a problem in that the applicability was lacking even though the specifications could be changed to some extent.
【０００６】また途中での仕様変更に備えて、予め出力
の大きなものを採用することも考えられるが、必ずしも
仕様変更が行われるとは限らず、結果的に不経済でコス
トアップともなる等のことから、好ましいことではない
とされている。[0006] In preparation for a specification change on the way, it may be possible to adopt one having a large output in advance, but the specification is not always changed, resulting in uneconomical and cost increase. Therefore, it is not preferable.
【０００７】この発明の目的は、空気圧による座板の固
定を機械的手段による固定に変えることによって従来の
課題を解決し、簡単な構造で吹込圧力にも充分に耐え、
途中での仕様の変更により吹込圧力が増大しても、座体
の浮き上がりを確実に阻止して、吹込コアとプリフォー
ムとの嵌合部分からの空気漏れを完全に防止することが
できる新たな構成の吹込コア挿入装置を提供することに
ある。The object of the present invention is to solve the problems of the prior art by changing the fixing of the seat plate by air pressure to the fixing by mechanical means, and with a simple structure to sufficiently withstand the blowing pressure,
Even if the blow pressure increases due to a change in specifications on the way, it is possible to reliably prevent the seat body from rising and to completely prevent air leakage from the fitting portion of the blow core and the preform. It is to provide a blow core insertion device having a configuration.
【０００８】[0008]
【課題を解決するための手段】上記目的によるこの発明
の特徴は、吹込コア挿入装置を、吹込成形操作部の上部
に設けた縦方向のガイド部材と、そのガイド部材に昇降
自在に保持した吹込コアの座体と、座体側部に並設した
シリンダとピストンロッドとによる座体昇降装置とから
構成し、上記座体の降下位置に該座体を固定するための
ストッパー装置を設けてなることにある。According to the features of the present invention according to the above-mentioned object, a blow core insertion device is provided with a vertical guide member provided on an upper portion of a blow molding operation section, and a blow member in which the guide member is vertically movable. It is composed of a seat body of the core, a seat body elevating device including a cylinder and a piston rod arranged side by side on the seat body, and a stopper device for fixing the seat body at the lowered position of the seat body. It is in.
【０００９】また上記ストッパー装置は座体とガイド部
材との係合手段を具備する。さらにその係合手段は座体
両側に位置するストッパー装置の外側部に進退自在なス
トッパー部材を備え、そのストッパー部材の嵌合溝を座
体の降下位置のガイド部材に設けてなる。Further, the stopper device includes an engaging means for engaging the seat body and the guide member. Further, the engaging means is provided with a stopper member which can move forward and backward on the outer side of the stopper device located on both sides of the seat body, and the fitting groove of the stopper member is provided in the guide member at the lowered position of the seat body.
【００１０】[0010]
【作 用】上記構成では、座体昇降装置の作動により座
体がガイド部材を案内として、吹込コアと共に降下す
る。これにより吹込コアが吹込金型の上部に位置するリ
ップ型内のプリフォーム口部内に挿入押圧される。上記
ストッパー装置を作動してストッパー部材をガイド部材
の嵌合凹部に挿入し、上方に対して座体をガイド部材に
固定する。その後に吹込コアを通してエアの吹込みを行
い、プリフォームを成形品に吹込成形する。吹込コアを
介して吹込圧力を受ける上記座板は、ストッパー装置に
よりガイド部材を反力として吹込圧力に対向し、上方に
移動せずにその位置を保つ。[Operation] In the above configuration, the seat body descends together with the blowing core by the operation of the seat body elevating device with the guide member as a guide. As a result, the blow core is inserted and pressed into the preform mouth in the lip mold located above the blow mold. The stopper device is operated to insert the stopper member into the fitting recess of the guide member, and fix the seat body to the guide member with respect to the upper side. After that, air is blown through the blow core, and the preform is blow molded into a molded product. The seat plate, which receives the blowing pressure through the blowing core, opposes the blowing pressure by using the guide member as a reaction force by the stopper device, and maintains its position without moving upward.
【００１１】[0011]
【実施例】図中１は機台で上面に下部基盤２が載置固定
してある。３は上部基盤で下部基盤２の上方に平行に設
けられ、その上部基盤３の下側にプリフォーム及び成形
品の移送手段として、円形の移送盤４が回転自在に設け
てある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the figure, reference numeral 1 is a machine base on which a lower base 2 is mounted and fixed. An upper base 3 is provided in parallel above the lower base 2, and a circular transfer plate 4 is rotatably provided below the upper base 3 as a transfer means for preforms and molded products.
【００１２】上部基盤３は下部基盤２の周辺に佇設した
複数本の支柱５，５に支持され、両基盤の間は作業空間
となっている。また移送盤４は上部基盤３の周辺に、部
分的に設けられた部材（図では省略）により保持されて
いる。上部基盤３の上面には一対の平行なリブ６，６が
四方に交差して設けてあり、かつ四方のリブ６，６の間
は穴部７，７となっている。The upper base 3 is supported by a plurality of columns 5 and 5 standing around the lower base 2, and a working space is provided between the two bases. The transfer board 4 is held by a member (not shown) partially provided around the upper base 3. A pair of parallel ribs 6 and 6 are provided on the upper surface of the upper base 3 so as to intersect in four directions, and holes 7 and 7 are provided between the ribs 6 and 6 on the four sides.
【００１３】上記移送盤４は環状本体の内側に内歯車８
を設けたものからなり、環状本体の四方にはコア型挿入
用の穴部９，９を有する。この各穴部９，９が位置する
移送盤４の下面には保持型兼用のリップ型１０，１０が
型置板１１，１１と共に取付けてある（図３参照）。The transfer board 4 has an internal gear 8 inside the annular body.
And has holes 9 for inserting a core die on four sides of the annular body. On the lower surface of the transfer platen 4 in which the holes 9, 9 are located, lip dies 10, 10 also serving as holding dies are attached together with the mold placement plates 11, 11 (see FIG. 3).
【００１４】上記リップ型１０，１０は、移送盤４と一
緒に移動して、上記上部基盤３の各穴部７，７にて停止
位置する。この移送盤４の回転移動は、上部基盤３の上
面に取付けた９０°角作動のアクチュエータによる回動
装置１２と、その回動装置１２の回動軸１３に連結さ
れ、上記内歯車８と噛合した歯車１４とにより９０°角
づつ間欠的に行われる。The lip molds 10 and 10 move together with the transfer board 4 and are stopped at the holes 7 and 7 of the upper base plate 3. The rotary movement of the transfer board 4 is connected to a turning device 12 by a 90 ° -actuated actuator mounted on the upper surface of the upper base 3 and a turning shaft 13 of the turning device 12, and meshes with the internal gear 8. It is carried out intermittently by 90 degrees with the gear 14 that has been formed.
【００１５】上記移送盤４の穴部下面には、円周方向に
穴部９を隔てて垂直軸１５が一対ごとに並行に貫設して
あり、その垂直軸１５の下端に案内部材１６を介して内
外に開閉自在に型置板１１が取付けてある。On the lower surface of the hole of the transfer board 4, a pair of vertical shafts 15 are provided in parallel with each other with a hole 9 in the circumferential direction, and a guide member 16 is provided at the lower end of the vertical shaft 15. A mold placing plate 11 is attached to the inside and outside of the mold so as to be freely opened and closed.
【００１６】上記垂直軸１５は一対ごと上端にわたり設
けた連結板１７により一体的に連結され、その連結板１
７の下側の移送盤４に貫入した受筒１８の内部にばね部
材１９が圧縮して収容してある。このばね部材１９の上
端は連結板１７と接し、その連結板１７を介して一対の
垂直軸１５を常時上方へ付勢し、垂直軸１５の下端に取
付けた上記型置板１４をリップ型１０と共に移送盤４の
下面に圧接している。なお、２０は移送盤４と型置板１
１とに穿設した型開用のくさび挿入孔である。The vertical shafts 15 are integrally connected to each other by a pair of connecting plates 17 provided over the upper ends thereof.
A spring member 19 is compressed and accommodated inside a receiving cylinder 18 that penetrates into the lower transfer board 4 of 7. The upper end of the spring member 19 is in contact with the connecting plate 17, and the pair of vertical shafts 15 is constantly urged upward through the connecting plate 17, and the mold plate 14 attached to the lower end of the vertical shaft 15 is attached to the lip mold 10. At the same time, it is pressed against the lower surface of the transfer board 4. In addition, 20 is a transfer board 4 and a mold plate 1
1 is a wedge insertion hole for opening the mold.
【００１７】上記移送盤４と上部基盤３との間には、基
台周辺部を残して上記垂直軸１５の上端部が移動する間
隙２１が設けてあり、この間隙２１により垂直軸１５が
移動盤上に突出しても、移送盤４の間欠回転が支障なく
行われるようにしてある。Between the transfer board 4 and the upper base 3, there is provided a gap 21 for moving the upper end of the vertical shaft 15 while leaving the peripheral portion of the base, and the gap 21 moves the vertical shaft 15. Even if the transfer board 4 projects above the board, the intermittent rotation of the transfer board 4 can be performed without any trouble.
【００１８】このような回転式成形機では、リップ型１
０の４つの停止位置を、順にプリフォーム成形操作部
Ｉ、温調操作部ＩＩ、吹込成形操作部ＩＩＩ、離型操作
部ＩＶとして、それらの操作に必要な装置や金型を配設
することができる。In such a rotary molding machine, the lip mold 1 is used.
The four stop positions of 0 are designated as a preform molding operation section I, a temperature control operation section II, a blow molding operation section III, and a mold release operation section IV in order, and the devices and molds required for these operations are arranged. You can
【００１９】プリフォーム成形操作部Ｉは、上下基盤
２，３に上下動自在に貫挿入して、移送盤４の内外側に
位置させた３本のタイバー２２と、そのタイバー２２の
上端にわたり取付けた型締盤２３及びタイバー下端の連
結盤２４と、下部基盤２の下側に設けられ型締ロッド２
５を上記連結盤２４に接続し型締シリンダ２６とから構
成され、上記型締盤２３の下側に、コア型２７が下向き
に設けてある。また下部基板２には、プリフォームのキ
ャビティ型２８が載置固定してある。The preform molding operation section I is vertically movably inserted into the upper and lower bases 2 and 3 and is attached to the three tie bars 22 positioned inside and outside the transfer board 4 and the upper ends of the tie bars 22. Mold clamping plate 23 and the connecting plate 24 at the lower end of the tie bar, and the mold clamping rod 2 provided below the lower substrate 2.
5 is connected to the connecting plate 24 and is composed of a mold clamping cylinder 26, and a core mold 27 is provided downward on the lower side of the mold clamping plate 23. A preform cavity mold 28 is placed and fixed on the lower substrate 2.
【００２０】上記プリフォーム成形操作部Ｉに隣位する
温調操作部ＩＩには、図では省略したが、プリフォーム
の温調型がリップ型１０に対して昇降自在に設けられ、
また上部基盤３の上には、コア挿入装置２９が配設して
ある。Although not shown in the figure, a temperature control mold of the preform is provided in the temperature control operation part II adjacent to the preform molding operation part I so as to be movable up and down with respect to the lip mold 10.
A core insertion device 29 is arranged on the upper base 3.
【００２１】上記吹込成形操作部ＩＩＩには、吹込型３
０が内外に開閉自在にして油圧シリンダ３１と共に下部
基盤２の上に載置され、上部基盤３の上には吹込コア挿
入装置３２が佇設してある。The blow mold 3 is provided in the blow molding operation section III.
0 is placed on the lower base 2 together with the hydraulic cylinder 31 so as to be openable and closable inside and outside, and on the upper base 3, a blow core insertion device 32 is installed.
【００２２】この吹込コア挿入装置３２は、第４図に示
すように、吹込成形操作部ＩＩＩの上部基盤３に設けた
接線方向の一対の支柱による縦方向のガイド部材３２ａ
と、そのガイド部材３２ａに昇降自在に保持した吹込コ
ア３８の座体３３と、その吹込コア３８に下向き挿通し
た延伸ロッド３８ａをピストンロッド３７の先端のプレ
ート３７ａに連結して上記座体３３に載置固定したロッ
ド挿入シリンダ３５と、座体側部に並設したシリンダと
ピストンロッド３６とによる座体昇降装置３４とから構
成されている。As shown in FIG. 4, this blow core insertion device 32 is a vertical guide member 32a formed by a pair of tangential columns provided on the upper base 3 of the blow molding operation section III.
The seat body 33 of the blow core 38 held up and down by the guide member 32a, and the extending rod 38a inserted downward into the blow core 38 are connected to the plate 37a at the tip of the piston rod 37 to connect to the seat body 33. The rod insertion cylinder 35 is placed and fixed, and a seat body elevating device 34 including a cylinder and a piston rod 36 arranged side by side on the seat body.
【００２３】さらに座体３３の上部両側にはストッパー
装置４１が設けてある。このストッパー装置４１は、側
部にピストン軸端４１ａを進退自在に突出したエアシリ
ンダと、上記ガイド部材３２ａの両側に対設した一対の
ホルダー４０ａの間に摺動自在に保持され、かつ先端形
状が平面半円形で後端に上記ピストン軸端４１ａを嵌着
したストッパー部材４０とから構成されている。Further, stopper devices 41 are provided on both upper sides of the seat 33. The stopper device 41 is slidably held between an air cylinder having a piston shaft end 41a projecting forward and backward on a side portion, and a pair of holders 40a provided on opposite sides of the guide member 32a, and has a tip shape. Is a semi-circular plane and has a stopper member 40 to which the piston shaft end 41a is fitted at the rear end.
【００２４】上記ガイド部材３２ａの座体降下位置の周
側には、環状溝による嵌合凹部３９が設けてあり、この
嵌合凹部３９に上記ストッパー部材４０を嵌込んで、ガ
イド部材３２ａに座体３３を固定することができるよう
にしてある（図５参照）。On the circumferential side of the seat body lowering position of the guide member 32a, there is provided a fitting recess 39 formed by an annular groove, and the stopper member 40 is fitted into the fitting recess 39 to seat on the guide member 32a. The body 33 can be fixed (see FIG. 5).
【００２５】上記座体昇降装置３４は図２に示すよう
に、ピストンロッド３６側を上部基盤３側に固定し、シ
リンダ側を座体３３の張出板上に固定して設けられ、エ
アなどの流体圧により上下動して座体３３を昇降する。As shown in FIG. 2, the seat body elevating device 34 is provided by fixing the piston rod 36 side to the upper base 3 side and the cylinder side to the projecting plate of the seat body 33, such as air. The fluid body pressure moves up and down to move the seat body 33 up and down.
【００２６】上記吹込成形操作部ＩＩＩに隣位する離型
操作部ＩＶには、図面には省略したが、移送盤４及び型
置板１１に設けた挿入孔２０，２０に下側から嵌り込ん
で、型置板１１をリップ型１０と共に内外に開放する一
対のくさびを上向きに備えたエアシリンダまたは油圧シ
リンダなどによる離型装置が、下部基盤２を貫通して設
けてある。Although not shown in the drawing, the mold releasing operation part IV adjacent to the blow molding operation part III is fitted into the insertion holes 20, 20 provided in the transfer plate 4 and the mold placement plate 11 from below. Then, a mold releasing device such as an air cylinder or a hydraulic cylinder provided with a pair of wedges for opening the mold placing plate 11 inward and outward together with the lip mold 10 is provided penetrating the lower base 2.
【００２７】上記吹込コア挿入装置３２を吹込成形操作
部ＩＩＩに備えた回転式成形機では、移送盤４が停止の
状態にあって、穴部７，９が重なりあっているとき、下
部基盤２の下側の型締シリンダ２６により上記タイバ２
２と共にコア型２７を型閉方向に移動すると、コア型１
７は穴部７，９よりリップ型１０に達し、先端の型面が
リップ型１０内に嵌合するとともに、段部がリップ型１
０の上面に接して押圧する。In the rotary molding machine equipped with the blow core insertion device 32 in the blow molding operation section III, when the transfer board 4 is in a stopped state and the holes 7 and 9 overlap each other, the lower base 2 The tie bar 2 by the lower mold clamping cylinder 26.
When the core die 27 is moved in the die closing direction together with 2, the core die 1
7 reaches the lip mold 10 through the holes 7 and 9, the mold surface at the tip is fitted into the lip mold 10, and the step portion is the lip mold 1
Press in contact with the upper surface of 0.
【００２８】これにより型置板１１が垂直軸１５と共に
ばね部材１９に抗して下方へ移動し、キャビティ型２８
の上面に接して、キャビティ２８とリップ型１０及びコ
ア型２７とが型閉じする。As a result, the mold placing plate 11 moves downward together with the vertical shaft 15 against the spring member 19, and the cavity mold 28
The cavity 28 and the lip mold 10 and the core mold 27 are closed by contacting the upper surface of the mold.
【００２９】上記型閉じ後に型締力を加え、射出装置４
２から、キャビティに溶融樹脂を注入して、扁平なプリ
フォーム４３（図７鎖線参照）を成形したのち、型締シ
リンダ２６により型開を行って上記コア型２７を上昇さ
せると、型置板１１も垂直軸１５と共にばね圧により上
昇する。このときリップ型１０はコア型の段部と接した
まま移送盤４の下面に戻る。更にコア型２７は型置板１
１が移送盤下面に接したのち、リップ型１０から抜け出
して上部基盤３の上方の元の位置に戻る。この結果、図
３鎖線に示すように、リップ型１０にプリフォーム４３
が残る。After the mold is closed, a mold clamping force is applied to the injection device 4
After injecting molten resin into the cavity from 2 to mold the flat preform 43 (see the chain line in FIG. 7), the mold clamping cylinder 26 performs mold opening to raise the core mold 27. 11 also rises with the vertical axis 15 due to spring pressure. At this time, the lip mold 10 returns to the lower surface of the transfer board 4 while being in contact with the step of the core mold. Further, the core mold 27 is the mold plate 1
After 1 comes into contact with the lower surface of the transfer plate, it comes out of the lip mold 10 and returns to its original position above the upper base 3. As a result, as shown by the chain line in FIG.
Remains.
【００３０】上記プリフォーム４３は、そのままの状態
で、移送盤３の回転によりリップ型１０と共に温調操作
部ＩＩを経て吹込成形操作部ＩＩＩと移送される。吹込
成形操作部ＩＩＩでは、まず空気圧により座体昇降装置
３４が作動し、ガイド部材３２ａを案内として座体３３
を、吹込コア３８及ロッド挿入装置３５と共に降下す
る。これにより吹込コア３８が延伸ロッド３８ａと一緒
に、吹込金型３０の上部に位置するリップ型１０内とプ
リフォームの口部内にと挿入され、またリップ型１０は
吹込コア３８によって、上記コア型２７の場合と同じ
く、型置板１１と共にばね部材１９に抗して、型閉じさ
れた吹込型３１の上面に押圧される。The above-mentioned preform 43 is transferred to the blow molding operation section III through the temperature control operation section II together with the lip mold 10 by the rotation of the transfer board 3 as it is. In the blow molding operation section III, first, the seat body elevating device 34 is actuated by air pressure, and the seat member 33 is guided by the guide member 32a.
With the blow core 38 and the rod insertion device 35. As a result, the blow core 38 is inserted together with the drawing rod 38a into the lip mold 10 located at the upper part of the blow mold 30 and into the mouth of the preform. Similar to the case of No. 27, it is pressed against the upper surface of the blow mold 31 with the mold closed against the spring member 19 together with the mold plate 11.
【００３１】次に上記ストッパー装置４１をエアにより
作動してストッパー部材４０をガイド部材側の嵌合凹部
３９に挿入する。これにより座体３３を上方に対してガ
イド部材３２ａに固定したら、ロッド挿入シリンダ３５
のエア作動と空気の吹込みとをほぼ同時に行って、プリ
フォームを図７に示す容器の成形品４４に延伸吹込成形
する。Next, the stopper device 41 is operated by air to insert the stopper member 40 into the fitting recess 39 on the guide member side. As a result, when the seat body 33 is fixed to the guide member 32a from above, the rod insertion cylinder 35
The air actuation and the air blowing are performed almost at the same time, and the preform is stretch-blow molded into the molded product 44 of the container shown in FIG.
【００３２】また成形機におけるリップ型１０の移送盤
下面の復帰は、型開き後の吹込コア３８の復帰に伴う上
記ばね部材１９のばね圧により自動的に行われ、その復
帰により容器もまたリップ型１０に開口部を保持された
状態にて移送盤側へ移される。そして容器は移送盤４の
回転によりリップ型１０に挟持された状態にて次の離型
操作部１１へと移送される。Further, the return of the lower surface of the transfer plate of the lip mold 10 in the molding machine is automatically performed by the spring pressure of the spring member 19 accompanying the return of the blow core 38 after the mold is opened. The mold 10 is moved to the transfer board side while the opening is held. Then, the container is transferred to the next mold release operation unit 11 while being held by the lip mold 10 by the rotation of the transfer board 4.
【００３３】[0033]
【発明の効果】この発明は上述のように、吹込成形操作
部の上部に設けた縦方向のガイド部材と、そのガイド部
材に昇降自在に保持した吹込コアの座体と、座体側部に
並設したシリンダとピストンロッドとによる座体昇降装
置とから吹込コア挿入装置を構成し、上記座体の降下位
置に該座体を固定するためのストッパー装置を設けてな
ることから、座体昇降装置の空気圧により座体を降下位
置に押さえ付けて置く必要がない。As described above, according to the present invention, the vertical guide member provided on the upper portion of the blow molding operation portion, the seat of the blow core held up and down by the guide member, and the seat side portion are arranged side by side. The blower core inserting device is composed of the seat body lifting device including the installed cylinder and the piston rod, and the stopper device for fixing the seat body is provided at the lowered position of the seat body. It is not necessary to hold the seat body down by the air pressure of.
【００３４】したがって、座体昇降装置に供給する空気
圧は、座体を昇降する程度の量でよく、座体はガイド部
材を反力として吹込圧力を受けるので、成形品の取り数
を増したり、成形品を細口びんから広口びんに変更した
りなどして、そこに使用される吹込空気圧の総量が増
し、また吹込コアの受圧面積の増大などから、座体に吹
込空気圧が強く作用しても、座体が浮き上がってプリフ
ォーム口部と吹込コアとの気密性が損なわれるようなこ
とはない。Therefore, the air pressure supplied to the seat body elevating / lowering device may be such that the seat body is lifted and lowered, and the seat body receives the blowing pressure with the guide member as a reaction force, so that the number of molded products to be taken increases, Even if the blown air pressure acts strongly on the seat due to the increase in the total blown air pressure used there, such as changing the molded product from a narrow mouth bottle to a wide mouth bottle, and the increase in the pressure receiving area of the blow core. The seat body does not rise and the airtightness between the preform mouth and the blow core is not impaired.
【００３５】また座体の固定は、座体とガイド部材とを
係止するだけでよく、その係止も座体両側に位置させた
ストッパー装置が備える外側部の進退自在なストッパー
部材と、座体降下位置のガイド部材に設けた係合凹部と
により容易に行い得るので、装置としても極めて簡単で
あり、コスト高となるようなこともない。Further, the seat body can be fixed only by locking the seat body and the guide member, and the locking is also performed by the stopper member located on both sides of the seat body and provided with the stopper member on the outer side which is movable forward and backward, and the seat member. Since it can be easily performed by the engagement concave portion provided in the guide member at the body lowering position, the device is extremely simple, and the cost does not increase.
【図１】 この発明に係る吹込コア挿入装置を備えた回
転式成形機の平面図である。FIG. 1 is a plan view of a rotary molding machine including a blow core insertion device according to the present invention.
【図２】 上部を縦断した回転式成形機の正面図であ
る。FIG. 2 is a front view of a rotary molding machine with its upper part cut longitudinally.
【図３】 回転式成形機の射出成形操作部の部分縦断側
面図である。FIG. 3 is a partial vertical cross-sectional side view of an injection molding operation unit of the rotary molding machine.
【図４】 この発明の吹込コア挿入装置の正面図であ
る。FIG. 4 is a front view of the blow core insertion device of the present invention.
【図５】 吹込コア挿入装置の固定状態を示す一部縦断
部分正面図である。FIG. 5 is a partial vertical sectional front view showing a fixed state of the blow core insertion device.
【図６】 プリフォームを鎖線にて示す成形品の縦断面
図である。FIG. 6 is a vertical cross-sectional view of a molded product showing a preform by a chain line.
１ 機台 ２ 下部基盤 ３ 上部基盤 ４ 移送盤 ３０ 吹込金型 ３２ 吹込コア挿入装置 ３２ａ ガイド部材 ３３ 座板 ３４ 座板昇降装置 ３５ ロッド挿入シリンダ ３６ 座板昇降装置のピストンロッド ３７ ロッド挿入シリンダのピストンロッド ３８ 吹込みコア ３８ａ 延伸ロッド ３９ 嵌合凹部 ４０ ストッパー部材 ４１ ストッパー装置 1 Machine Stand 2 Lower Base 3 Upper Base 4 Transfer Plate 30 Blow Mold 32 Blow Core Insertion Device 32a Guide Member 33 Seat Plate 34 Seat Plate Lifting Device 35 Rod Insertion Cylinder 36 Seat Plate Lifting Device Piston Rod 37 Rod Insertion Cylinder Piston Rod 38 Blow core 38a Stretching rod 39 Fitting recess 40 Stopper member 41 Stopper device
Claims (3)
部と吹込成形操作部の両方を備え、両成形操作部間にプ
リフォーム及び成形品の保持型兼用のリップ型を一定間
隔ごと有する移送手段を配設してなる射出吹込成形機の
吹込コア挿入装置であって、 その吹込コア挿入装置は、吹込成形操作部の上部に設け
た縦方向のガイド部材と、そのガイド部材に昇降自在に
保持した吹込コアの座体と、座体側部に並設したシリン
ダとピストンロッドとによる座体昇降装置とからなり、 上記座体の降下位置に該座体を固定するためのストッパ
ー装置を設けてなることを特徴とする射出吹込成形機の
吹込コア挿入装置。1. A transfer means comprising at least both a preform injection molding operation section and a blow molding operation section, and a transfer means having a lip mold, which also serves as a holding mold for the preform and a molded product, at regular intervals between the both molding operation parts. A blow core inserting device for an injection blow molding machine, which comprises a vertical guide member provided on an upper portion of a blow molding operating section and a blow member held up and down by the guide member. A seat body of the core, a seat body elevating device including a cylinder and a piston rod arranged side by side on the seat body, and a stopper device for fixing the seat body at the lowered position of the seat body. Blow core insertion device of the characteristic injection blow molding machine.
との係合手段を具備する特許請求の範囲第１項記載の射
出吹込成形機の吹込コア挿入装置。2. The blow core insertion device of the injection blow molding machine according to claim 1, wherein the stopper device includes a means for engaging the seat body and the guide member.
し、そのストッパー装置の外側部に進退自在なストッパ
ー部材を備え、そのストッパー部材の嵌合溝を座体の降
下位置のガイド部材に設けてなる特許請求の範囲第１項
記載の射出吹込成形機の吹込コア挿入装置。3. The stopper device is located on both sides of the seat body, and is provided with a stopper member that can move forward and backward on the outer side of the stopper device, and the fitting groove of the stopper member is provided in the guide member at the lowered position of the seat body. A blow core insertion device for an injection blow molding machine according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12313393A JP2562108B2 (en) | 1993-04-28 | 1993-04-28 | Blow core insertion device for injection blow molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12313393A JP2562108B2 (en) | 1993-04-28 | 1993-04-28 | Blow core insertion device for injection blow molding machine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61263377A Division JP2536742B2 (en) | 1986-11-05 | 1986-11-05 | Rotary injection blow molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0615726A JPH0615726A (en) | 1994-01-25 |
| JP2562108B2 true JP2562108B2 (en) | 1996-12-11 |
Family
ID=14853006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12313393A Expired - Lifetime JP2562108B2 (en) | 1993-04-28 | 1993-04-28 | Blow core insertion device for injection blow molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2562108B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5798440B2 (en) * | 2011-10-18 | 2015-10-21 | 日精エー・エス・ビー機械株式会社 | Blow mold unit and blow molding machine using the same |
-
1993
- 1993-04-28 JP JP12313393A patent/JP2562108B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0615726A (en) | 1994-01-25 |
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